Water filter



FIG. 1 is a front elevational view of a water filter showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a top perspective view thereof, on a reduced scale;

FIG. 6 is a bottom perspective view thereof, on a reduced scale. 

The ornamental design for a water filter as shown and described. 